The problem with taking a group for a walk, he went on while we waited for the others to follow, lay in working out how to reach the end all at the same time while accommodating different styles and rates of progress. the fastest walkers had to stop frequently to let the slower ones catch up: this meant that the fittest members of the group were given the most opportunities to rest, while those who struggled to keep up were never allowed a chance to catch their breath. yet if the slowest were given as many stops as the fastest, the walk would have taken approximately double the time: in addition, the fastest would now be waiting twice as long as before, which created new problems such as boredom and frustration, or becoming hungry or cold. his mother has reassured him that these were problems to which he was capable of finding logical solutions but he was aware that many of what appeared to him as rational challenges appeared to other people as metaphors and he was always anxious if a misunderstanding should arise.
